Debugging F#

  • Article

Note

This article applies to Visual Studio 2015. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here

Debugging F# is similar to debugging any managed language, with a few exceptions:

  • The Autos window does not display F# variables.

  • Edit and Continue is not supported for F#. Editing F# code during a debugging session is possible but should be avoided. Because code changes are not applied during the debugging session, editing F# code during debugging will cause a mismatch between the source code and the code being debugged.

  • The debugger does not recognize F# expressions. To enter an expression in a debugger window or a dialog box during F# debugging, you must translate the expression into C# syntax. When you translate an F# expression into C#, make sure to remember that C# uses == as the comparison operator for equality and that F# uses a single =.

See Also